Power-jack.



` w. H. LEPHEVUST.

POWER IACK.

APPLmATmN FILED :ULY 20.1915.y

Paytentd Aug. 13, 1918. v

2 SHEETS-SHEET 2.

UNITE-D STATES PATENT onirica.

WILLIAM H. LErnEvos'r, or NILES, enzo.

I' rowER-JAGK'.

Specication of Letterslatent.

:rai-,enten Ang-. 1 3, 191s.

Application n ed July 20, 1916. Serial No. 110,358.

To all 'whom it may concern.' 'f

Bc it known that I, WILLIAM H. Lernevos'r a citizen'of the United States, and resident of Niles, in the county of Trumbull and State of Ohio,have invented a certain new and useful Improvement in Powcr" Jacks,-of wl lch the following is a specification.

My present invention relates to m'echanism for transmitting the energy developed by a motor vehicle, when the Vmain mass 1s inert, to other mechanism 'rendering the motor vehicle susceptible of use as a sta- A tionary motive plant.

.factor described-'- which willeffectively support m'otor vehicles at the drving.\ vhe'els, in such4 aman'ner that, during operation, the power; Vtransmission to said driving wheels may be utilized at a. stationary place and insuch a. manner thatthev'ehicle will not become displaced under lordinary conditiszms,` and without placng-unduestrain 4upon the running. gearof the vehicle; to provlde energy transmission which may. be Vutilized for load-' ing or unloading the vehicle by use of motors ofthe vehicle itself; and,'energjy trans mission by which the vehicle may be quickly moved out of operativerelation to the transmission withoutstopping the' motor, to make room for a following` motor vehicle, thus -acilitatin operation,',such as the loading of a' plura ity of vehicles in succession as is desirable in building construction where itquickly load or unload y the building material.

is found desirable-to Another object of my invention is to provide energy transmission embodying gearing which must be well lubricated, access being readily gained to saidigears while the vehicle is in operative relation'tofsaid transmission. Further objects (r'f*iny`-ii1vention will ap .pear in the following'detailed description, takt-.nin (,:onnection with the accompanying drawings, formingr a part of this specification, and ,in wjhichi'drawings':

Figu're 1 LisI an end elev'a'tionpf'l energy transmission constructed according to my in vention., .y Y y Fig. Q is a side elevation of the same.

Fig. 3 is'a top plan view of a portion of "sa i d transmission.

Fig. 4- is au enlarged detail view of a snpport.

The principal objects of my invention are-v ",to providelenergy-transmission of the charofAFig. 3. 4

Fig. is an enlarged detailcctional view of an approved form of bearing.

F ig.' 7 is "an enlarged detail view partly in elevationfand partlyin vertical section oi" mechanism-1 forming. ar part of control means Vof the transmission.

In the drawings, Where similar` characters refer to similar parts th roughout. the several views, A designates' a floor; B abase below the level of said Hoor; C a motor vehicle including driving wheels D; E friction wheels supporting said vehicle 4C at wheels D; F means for supporting wheels E upon base B; Gr mechanism for causing said wheels to rotate inf'unison and in the same direction; H control. means for wheels E; I an endless endless carrierd'into operative relation to -the vehicle C; and-,iK 'means ,for transmiting power from Vthe vehicle C- to endless carrier I.' j

, The base B,which is disposed b 'elow the plane upon which the motor vehicle 4is -\driven, may be made .up.,of longitudinal 4members 8 and transverse members 9, sc-

oured together in any suitable manner, and

' Fig. risa sectional view-on,' the line 5 5 .cari-ier; J instrulncntalty[for positioning is preferably disposed so thatthe upper portions of the friction wheels'E are sch- `stant-ially-alincdvvith the fiom-"surface A.

As to the friction wheels E, they are an 'ranged in two pairs designated l0 and 11,

cach set compl-isinor two wheels in spaced relation laterally, the two sets of wheels being arranged with theiraxes of rotation in parallel relation with wheels of one set alined with wheels of the other set, and as iscle'a'rlv shown in Fig. 3 of the drawings. When disposing the motor vehicle C in 0perative relation to the friction wheels E, the driving wheels D enga e the circumference of wheels E in the hov ow.y between cooperating wheels. It is preferred to pro vide a plurality of ribs 13 on the circumference of each wheel, said ribs extending from the side portions of the wheel and converging :1t-substantially the central plane. of the. wheel, the ribs of all wheels converging in the same direction. The wheels of each set are spaced apart one from the other with their central planes at substantially the gage of the wheels of the motorvehicle, so that, the drivingr wheels D are disposed in operative relation to the friction win-unis I' the ribs 13 at their point o 2o its concavity centered in a plane,

25 preferred construction,

$0 Fig. 6 of 85 ing 45 Thus,

E, and the former are rotated, the tendency-' will beto center the motor vehicle directly over the .set of friction wheels, the tread of the driving wheels seeking en agement with convergence. Even though the gage of the driving wheels D is smaller or greater than the gage of the wheels E, the tendency will be to maintain themotor vehicle centered over the set of friction wheels.

As to the means F for supporting friction wheels E, in the example shown, the wheels of set 10 are rigid with a shaft 14, while the wheels of set 11 are rigid with a shaft 15,'

15 the shafts 14 and 15 being supported by the means F which may comprise a beam 16- at each side o'f coperating wheels E, each beam .being rovided with two two-part bearings 17,- tie one part 18 disposed with i designated :'v--cv at substantially 45 to the or base B, and lthetwo planes converging above said base, as is clearly shown in Fig. 4 0f the drawings. In the the bearing 17 in-V cludes an annulus 19l having a tapering bore 20, receiving a plurality of tapered rollers 21, which bear against the eriphery of the shaft, it receives, as is c early shown in the drawings, the annulus 19 being held in operative relation to the bearing part 18, as by a second part 22, secured to part 18 as by bolts 23.

ferring now to the mechanism for causthe wheels E to rotate in unison and in the same direction, it ma comprise a shaft 24 disposed to one side o the sets of wheels 10 and'll, said shaft supported by bearings by the line horizontal,

i 25 and disposed with its longitudinal axis in a plane at a right angle to the axes of rotation of the w eels E; bevel. gears 26 rigid with shaft 24, 'and co-meshing bevel gears 27 with the shafts 14 and 15, as is clearly shown in Fig. 3 of the drawings. as movement is transmitted to the vdriving' wheels D in the direction indicated b the arrow in Fig. 2, the friction wheels Eywill rotate as indicated, which in turn transmit movement to shafts 10 and 11, land '50 to shaft 24 .through `the co-meshing bevel gears, 'all friction rollers rotating in unison, and where the motor vehicle C embodies iidilferential ermitting one wheel to rotate faster than t e others, there is no danger of lost motion.

In order that movement of the. friction prqyided, which, in the exam' le shown, om` prises drums 28, one lateral y of and adja- Ml cent each friction wheel E; flexible bands`29,

tial movement of said shaft in one direction `wheels may be controlled, the ineansQrH i8-l will draw said bands tightly yabout their respective drums, whereas, movtient in 'a counter direction will relieve pressure of said bands upon said drums; a lever 32 forl if desired, a decperating o acting upon lever 32 shaft 30 and, vice 33 l r yieldab to normally release' ands 29 from pressure upon their respective drums. The means 31 may consist o a collar 34 between adjacent drums 28, and rigid with shaft 30, said collar provided with a pluralit of extensions 35 to which one end of the ands are connected, and extensions 36 through which theA of said bands extend, nuts other end portions 37 being provided to adjust the bands, and to take up wear. If desired, theinternal faces of the bands may carry a plurality`of wood orber blocks 38, which hear directly u on the drums 28. The lever 32 is prefera l in the form of a foot lever, provided' wit a plate 39 normally disposed adjacent the floor surface A, while the device G may comprise a socket 40 rigid with base B, the bore 41 of which receives a pin 42 rigid with a saddle 43 upon which the lever 32 rests, an expansion spring 44 being interposed be tween the saddle 43 and the upper face of socket 40. Thus when the lever 3 2 is depressed, the shaft 30 is moved circumferentially, as indicated by the arrow in Fig. 5., which tightens the bands 29 about their respective drums 28. When pressure upon the lever 32 is relieved, said lever responsive to device 33, moves upwardly rotatingfshaft 30 in a counter direction and relieving* pressure upon the drums 28.

y In the example shown, I have disclosed means for loading the motor vehicle C, utilizing its motor for such purpose, the means comprising the endless carrier I, instrumentality J, and means K hereinbefore referred to. The endless carrier I ma suitable' type, such as a exi le band 45 provided with a plurality of transverse slots 46. The instrumentality J may comprise a 'frame 47 supporting carrier I; links 48 piv- ,connected with links 48 as at 52, and provided with a plurality of teeth 53 at their free ends; gears 54 co-mesliing with teeth 53 and carried by brackets 55, said gears being rotatable in unison as by cranks 56; and, a keeper 57 forretaining the draw bar in o erative relation to its respective gear 54.

hns, by rotating the cranks 56 in the direction indicated by tlic arrow, the links 48 are swung so as tol changetheir angular position with respect to frame 47, ositioning the e ressfend "of carrier I a ve the motor' vehicle C, I the crank 56 is rotated in a counter direction, the frame 47l moves be of any i away from vehicle C, being supported at its one end by wheels 50 and at its other end portion by links 48.

Referring now to means K, it may coniprise a. Sprocket 58, rigid with shaft 2i; a Sprocket wheel 59 carried by frame 4-7 with its axis of rotation coincident with the axis of oscillation of links 48 at said frame; sprockets (i0 rotatable with slirocliet 5l) as through shaft 61,.sprockets (i2 carried by frame 4'( at the upper end portion; and, Shafts 63 and 64 about which endless carrier I is trained, the shaft 63 Yheilig rigid with sprgets 62, a chain 65 being trained about sprv ets 58- and 59, while, chain 66 is trained about the sprockets 60 and 62.

`The operation of the traiisi'nission `is as follows VUpon the approach of the motor vehicle toward the transmission, the operator def presses lever 32 which retains the friction wheels E against rotation. As soon as the motor vehicle is in operative relation to the sets of friction wheels, motion is transmitted to the driving wheels D, which transmit movement to the shafts 14 and 15., which rotate in unison, and impart ino-vement to shaft 24.` This latter shaft may be provided with a 'pulley 67, from Which power may be transmitted to suitable tools or machines,

(not shown in the drawings).

Where the transmission includes means for loading or unloading the vehicle, after the vehicle is in operative relation to the transmission, the crank 56 may be rotated as hereinhefore described, positioning the egress end of the carrie-r directly above the body of vehicle C, and material may be disposed upon the endless carrier I which is delivered to the vehicle body. Should the motor vehicle be backed upon the transmis sion `to assume a. position opposite to that shown in liig. 2, the endless,l carrier will be so rotated as to deliver any inaterialplaced thereupon from the vehicle body (l to a. ,stationary point adjacent the wheels 50.

As soon as the vehicle C is loaded or unloaded, the speed maybe reduced, and the opera tor has merely to depresslever 32, re

straining movement of fric-tion vwheels E and the. inotor vehicle C will linove out of 2. lna power jack, the combination of two` sets of friction wheels, each set com )risin two wheels in spaced relation lateral y, an said sets arranged with their axes of rotation in parallel relation, with wheels of oneset arranged in alinenient with wheels of the other set., a base, a shaft rigid wi` wheels of each set, and means for support ing said shafts of said wheels from said base, said means including abeam ateach side of coacting alined wheels, and two two-part hearings rigid with saidbeains, one bearing disposed with its front concavity centered in a plane substantially 45" to the horiontal, and the said planes of said bearings con verging above said base.

3. In a power jack of the character described, the combination of a base, two sets of friction wheels each `set comprising two wheels in Yspaced relation .laterally and said sets arranged with their axes of rotation in parallel relation with Wheels of one set aimed with wheels of the other set, a shaft the rigid with the wheels of each set, means for supporting said shafts from said' base, a third shaft to one side of said sets of wheels, and lying in a plane at a right angle to the axes of the latter, and bevel gears carried by said shafts to causethe said .shafts of said wheels to rotate in unison and in the same direction.

4. In a power jack ofthe character described, the combination of a base` twosets of friction wheels, each set comprising two wheels in spared relation laterally and Said sets arranged with their axes of rotation in parallel relation with wheels of one set alined with wheels of the other set, a Shaft rigid with the wheels of each set, means for supporting said shafts from said base, a third shaft to one side of said sets of Wheels, and lying in a plane at a right angle to the axes of the latter, bevel gears carried by said shaft to canse the said shafts of'said Wheels to rotate in unison and in the same direction, and a transmission when-i on said third Shaft.

5. In a power jack of the characterdescribed, 'the combination of a base, two `nets of friction wheels, each set comprisin two wheels in spaced relation laterally andsaid sets arranged with. their axes of rotation in parallel relation with wheels of one Set .'ilined with wheels of the other set, a shaft Irigid ivith the wheels of each set, means for supporting ysaid `shafts from said base, means foi: causing said shafts to rot-ate in unison and inthe saine direction, a drum adjacent each friction wheel rigid withits respective shaft. alv third shaftparallel with the first .sliyiifts `between the saine and supportedby ist - drawn tightly 4`said base, bands about said drums and operscribed, the combination of a base, two sets two of friction wheels, each set comprisin said wheels inspaced relation lateral an sets arran edwith their axes of rotation in' parallel re ation, with the wheels of one set alined with the wheels of .the other set, a shaft rigid with the wheels of each set, means for supporting said shafts from said base, meansifor causin said shafts to rotate in unison in"A the same ireetion, a drum laterally of each friction wheel of each set and rotatable therewith, a' third shaft parallel to said first shafts, between the same and supported by said base, ba ds about said drums and operatively connedied with said shafts to be drawn tighth7 about said drums when said shait is moved circumferentially in one direction and to relieve said bands when laterall and said sets arranged with`their axes o rotation in parallel relation with the wheelsD of one reet alined with the wheels of the other. "set, a shaft rigid with the wheels of each set, means for s`p6rtin said shafts from said base, means or causing said shafts t'o rotate in unison in the ysamedirection, a drum arranged laterally .of each `friction -wheel of jeach 'set and rotatable therewith, a brake vshaft arr'an d in parallelism and between the shafts o said wheels, bands securedat opposite endsto said brake shaft and encircling ,the adjacent bandszand means for rocking said brake shaft in one direction to simultaneously bind all'of said bands about the Vdrums and in the' otherd-irection to simultaneously release all ,of}said drums. w WILLIAM H. LEPBEfos'n 

